Source : Webster's Revised Unabridged Dictionary (1913)

Aerometry \A`["e]r*om"e*try\, n. [A["e]ro- + -metry: cf. F.
   ['e]rom['e]trie.]
   The science of measuring the air, including the doctrine of
   its pressure, elasticity, rarefaction, and condensation;
   pneumatics.